Sending UDP from Arduino Uno to InfluxDB - arduino

Question

So I’ve got an Arduino Uno and the Ethernet Shield V2 and connected these to a temperature sensor. Everything is working fine, the temperature is shown as desired, the problem is that I don’t seem to be able to save the results in my influxDB database.
Here my sketch:
#include <SPI.h>
#include <Ethernet.h>
#include <EthernetUdp.h>
const int sensorPin = A0;
int sensorVal;
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac = {
0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
byte host = {192, 168, 0, 153};
unsigned int port = 8089; // local port to listen on
EthernetUDP Udp;
void setup(){
//////////////////////
// PUT YOUR SETUP CODE HERE TO RUN ONCE
//////////////////////
Serial.begin(9600); // open serial port
Ethernet.begin(mac, host);
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
// Check for Ethernet hardware present
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
Serial.println("Ethernet shield was not found. Sorry, can’t run without hardware. :(");
while (true) {
delay(1); // do nothing, no point running without Ethernet hardware
}
}
if (Ethernet.linkStatus() == LinkOFF) {
Serial.println(“Ethernet cable is not connected.”);
}
// start UDP
Udp.begin(port);
}
float getTemperature() {
sensorVal = analogRead(sensorPin);
float voltage = (sensorVal/1024.0) * 5.0;
float temperatureC = (voltage - 0.5)*100;
return temperatureC;
}
void loop(){
//////////////////////
// PUT YOUR MAIN CODE HERE; TO RUN REPEATEDLY
//////////////////////
String line, temperature;
delay(1000);
temperature = String(getTemperature(), 2);
Serial.println(temperature);
line = String(“temperature value=” + temperature);
Serial.println(line);
Serial.println(“Sending UDP packet…”);
Udp.beginPacket(host, port);
Udp.print(“temperature value=”);
Udp.print(temperature);
Udp.endPacket();
}
These are the setting from the config file of the influxDB:
[[udp]]
enabled = true
bind-address = “:8089”
database = “arduino”
retention-policy = “”
InfluxDB precision for timestamps on received points ("" or “n”, “u”, “ms”, “s”, “m”, “h”)
precision = “s”
I would appreciate if somebody could give me some clues about what I’m doing wrong.
Cheers

Answer 1

According to the documentation, you want to pass a remote IP (not local IP) when you call Udp.beginPacket.
Does host represent a remote IP address? Looks like you are using host as a local IP to begin Ethernet as well. It is likely that you are not sending packets to a remote host. Make sure you pass a local IP to Ethernet.begin() and pass a remote IP to Udp.beginPacket().